NEW YORK The kind of quick-witted, high-toned genre flick programs like Cinemania were made for, Magnus Martens's Jackpot is a black-comic ride once again demonstrating that sudden windfalls of cash aren't all they're cracked up to be. Though likely to attract remake-rights attention, the pic's success with such worn-out tropes would be tough to replicate, especially considering how much entertainment value comes via idiosyncratic performances...